The Micron MT55L256L18F1T-12TR is a 4Mbit ZBT synchronous SRAM organized as 256K x 18 bits. ZBT architecture eliminates the dead bus cycle between read and write transitions.
It is not rated for industrial enclosures or outdoor cabinets.
Micron MT55L256L18F1T-12TR 4Mbit ZBT SRAM, 9 ns Access Time
MPNMT55L256L18F1T-12TR
Active
Micron ZBT® series, 4Mbit SRAM, 256K x 18 organization, 9 ns access time, 83 MHz, parallel interface, 3.135 V supply, 100 TQFP, 0°C to 70°C.
$4.80Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026
Specifications
| Parameter | Value |
|---|---|
| Series | ZBT® |
| Interface | Parallel |
| Mounting | Surface Mount |
| Operating temperature high | 0°C to 70°C (TA) |
| Frame_size | 4Mbit |
| Access time | 9 ns |
| Memory type | Volatile |
| Frequency | 83000000.0 |
| Package_type | Bulk |
| Memory format | SRAM |
| Status | Active |
| Supply voltage | 3.135 |
| Memory organization | 256K x 18 |
Product details
Frequently asked questions
What is the access time of MT55L256L18F1T-12TR?
The access time is 9 ns, measured from the clock edge to data valid. This is the key timing parameter for bus margin analysis at the 83 MHz operating frequency.
What is a direct replacement for MT55L256L18F1T-12TR?
There is no official direct replacement from Micron because the part is still active. The peer parts listed (MT29F4G08, MT29F1G08, MT25QU256) are Flash memories, not functional equivalents to this ZBT SRAM.